odds are.. if this is his first offense.. he will only get supervised probation.

I think tho.. this should be a BIG wake up call for your family as a whole. Yeah, anger, disappointment, and disbelief are going to be very appropriate reactions. Bottom line is tho.. he is family.. and if this is indeed his first offense... lack of support for him is not going to be what your brother needs. What he needs is his family as a whole to convey to him that "Yeah, you are family, we love you, we don't agree with your life choices, but we are here to help you however we can.". This help definetely needs to include counseling. I don't believe for one moment that a "good kid" suddenly overnight decides to make decisions like the ones your bro made. This being said, I would go on to say that counseling is probably in order for all of you...

Sorry if this came out a bit harsh.. but what I am trying to say is that no matter what your bro has done... he is your bro. Yeah, it is okay not to agree with his choices, but I don't think that letting him sink or swim on his own is the response he is gonna need on his first time screwing up.